Head, Press and Public Relations Unit ofNAPTIP, Mr Josiah Emerole, confirmed the arrest while speaking to the News Agency of Nigeria (NAN) in Abuja, on Saturday.
NAN reported that Sagiru pushed her sister-in-law, who lived with her into a pot of boiling water following a minor disagreement.
The victim, whose name was given as Hasiya Ibrahim, was reported to have suffered high degree burns before some good Samaritans rescued and took her to NAPTIP headquarters in Abuja.
Emerole told NAN that the victim was under the custody of NAPTIP for medical attention, while the suspect, was picked up on Thursday, and the matter was awaiting further investigation.